JPH01253721A - File projector - Google Patents

Abstract

PURPOSE:To keep a bending and deformed file in parallel with a stage plane by forming a stage retainer and a stage receiving plate in the shape of a frame and retaining a tool for holding an object to be projected. CONSTITUTION:If out of the receiving plate 13b of an upper stage 13 and a retainer 13a, at least the retainer 13a is formed into a frame, said holding tool can be retained without interfering the projection of an object. Even if the file, being an object to be projected, bends or is deformed, it can be kept in parallel with the stage plane, and an appropriate projected image can be obtained by the projector of simple structure.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a file projector in which a projector holder is placed on the top surface of the projector body via a stage that is movable back and forth and left and right. When projecting objects held in slide files, slide files, etc., the various files mentioned above can be placed parallel to the stage to ensure proper projection. Note that the file projector herein includes an overhead type file projector, a so-called microscopic projector, and the like.

(Prior Art) Conventional overhead type file projectors are disclosed in, for example, Japanese Patent Publications No. 55-45887 and Japanese Patent Publication No. 55-4773.
As shown in Publication No. 1, the projection lens system is moved vertically and horizontally by moving a stage that holds a slide file in which a large number of color slides are mounted on vertically and horizontally movable upper and lower stages provided on the top of the projector body. I was trying to focus and project the slide film of each slide file.

When each slide file was held on the upper stage, a portion of the periphery was latched and fixed by the holding frame, but the top surface of the slide file remained open. On the other hand, there is one in which the object to be projected is sandwiched between two upper and lower transparent plate-like bodies, avoiding the open state. The same applies to a microscopic projector that uses a slide as an object to be projected.

(Problem to be Solved by the Invention) However, in conventional file projectors, where the file is placed on the upper stage with the top surface open, the file can be easily attached and detached, but the file is not parallel to the upper stage. There may be cases where it is not retained. For example, the entire file may be distorted due to insufficient file storage management, or the file may be deformed due to other reasons. Therefore, simply placing the file on the upper stage does not maintain the parallel state of the file, and the slide mounted on the file is not in an appropriate state for the projection lens system. This was necessary for each individual slide, causing inconvenience in projection.

On the other hand, if the upper stage is a file holding body consisting of a holding plate and a receiving plate, and by holding down the file with a transparent holding plate, even a curved file can be forced parallel, for example, because it is a glass plate, the file can be held parallel. When receiving light from an optical device and forming an image of the object using a projection lens system,
Incident light was refracted and the image projected onto the screen by the reflecting mirror was sometimes distorted. In particular, when a sample specimen is sandwiched between transparent bodies and the specimen is further held with a cover glass plate and placed on the upper stage, the influence of refraction is a big problem because the incident light passes through several transparent bodies. Ta.

The present invention has been proposed to solve the above-mentioned problems.Even if the file placed on the stage is curved or deformed, it can be maintained parallel to the stage surface, so that an appropriate projected image can be obtained. The purpose of this project is to provide a file projector with a high resolution.

(Means and Effects for Achieving the Object) In order to achieve the above object, the present invention provides a projector body that has a light source and a condenser lens for projecting light, and that has an upper opening covered with a semi-transparent plate, and a projector body that is integrated into the projector body. A reflecting mirror and a projection lens system are held by support arms extending from the side to above the condenser lens, and a lower part is movable in the front and back direction (Y-axis direction) via guide rails provided on both left and right sides of the projector body. The stage and the left and right direction (X-axis direction) through guides provided in the front and back of the upper surface of the lower stage in a direction orthogonal to the guide rail.
The receiver is movable on the upper plate and can be moved on the plate and opened/closed via a guide tool which is provided at both ends of the receiving plate and the receiving plate surface and has elongated holes for holding down temporary slides that are continuous with the drop grooves. A file projector comprising an upper stage consisting of an upper stage, in which at least the retaining plate of the upper stage's retaining plate and receiving plate is a frame body that retains the subject holder without interfering with the projection or projection of the subject. be.

Thereby, the file on the stage can be easily kept parallel to the stage surface, and an appropriate projected image can be obtained.

(Embodiment) Figures 1 to 3 show a first embodiment of the present invention.
is the projector body, 2 is a condenser lens for projecting light, 3 is a translucent plate that covers the top of the projector body, 4 is a reflector, 5 is a projection lens system, 6 is from one side of the projector body to above the condenser lens The extending support arm 7 is an adjustment knob for focusing the projection lens system. Figure 2 shows the projector body 1
It is an abbreviated cross-sectional view showing the internal structure of the device, in which 8 is a light source and 9 is a cooling device. Figure 3 is for showing the configuration of the lower stage and upper stage. The lower stage 11 can slide on the projector body in the front and back direction (Y-axis direction) via guide rails 10 provided on both left and right sides of the top surface of the projector body. . The guide rails 10 are provided on both front and rear sides of the upper surface of the lower stage 11.
A guide 12 is provided in a direction orthogonal to the upper stage 13, and the upper stage 13 can slide on the main body in the left-right direction (X-axis direction) via the guide 12. Therefore, the file fixed on the upper stage 13 can be moved back and forth, left and right on the projector body, and the slide held in the file can be appropriately selected and positioned directly below the projection lens system 5. In addition, to slide the upper and lower stages,
A pitch groove and a protrusion that engages with the groove (not shown) are provided so that the frame can be moved in pitch according to the type of object held in the file, so that the frame can be moved.

Next, the upper stage 13 has a holding plate 13b and a receiving plate 13a, and a file is held between them.

Guides 14 are provided on both rear sides of the receiving plate 13a for sliding the restraining plate 13b to open and close it. Guide tool 14
has a long hole 15 that engages with the bottle 16 provided on the holding plate 13b.
A drop groove 15a is continuously formed at the rear end of the elongated hole 15. 4A and 4B show the structure of the upper stage 13, in which the pin 16 of the holding plate 13b is dropped into the groove 1.
5a, pull it out toward you along the elongated hole 15, and lift it upwards, as shown in FIG. 4A. This operation is performed to take in and out files held between the upper and lower plates, but the projection lens system 5 supported by the support arm 6
Open the holding plate 13b while avoiding the
This is effective in preventing damage to slides and the like due to contact with the upper and lower plates when loading and unloading files by providing a gap between the upper and lower plates and the receiving plate 13a. In order to hold the file, the holding plate 13b may be returned to the drop groove 15a and the holding plate 13b may be closed.

FIG. 4B shows an embodiment in which both the holding plate 13b and the receiving plate 13a are grid-shaped frames. Inside each grid is a void, and the file body is constructed such that the slide held (mounted) in the slide file as shown in Part 8 is located in this grid. Therefore, each component of the frame body is configured to be positioned above the outer peripheral frame and internal partition frame of the slide file, and when holding the slide file, even if there is some curvature or deformation, it can be corrected. However, the parallel state along the upper and lower plates can be maintained. Moreover, since there is no transparent material such as glass on the upper and lower plates, the projection lens system 5 for projecting the slide is required.
The incident light will no longer be refracted by the stage. Further, although there was a problem that light leaking from the partition frame of the file entered the operator's eyes, there is an effect that the light is blocked by the frame body of the holding plate 13b.

FIG. 5 shows a second embodiment of the present invention, in which the projector body etc. are the same as in the first embodiment, but the structure of the upper stage is different. The holding plate 13b is a lattice-like frame body, and the receiving plate 13
c is provided with a transparent glass plate 13d. Receiving plate 1
It goes without saying that the entire 3c may be made of a glass plate. This receiving plate configuration is used for films that cannot hold the subject in the file, or for films that are extremely thin sheet-like and cannot be held flat even when sandwiched between the upper and lower plates. Incidentally, by providing a glass body as such a receiver, it is effective for a projecting object which needs to be protected from heat in addition to cooling the heat from the light source of the projecting object with a cooling device. Even with this configuration, since the restraining plate 13b does not include a glass plate, refraction of light incident on the projection lens system can be suppressed compared to the conventional one.

Figures 6A and 6B show the third embodiment of the present invention.
Similar to the embodiment, the configuration of the upper stage is different.

The holding plate 13e is composed of an outer frame and a linear body 13f installed only in one direction within the outer frame, and the receiving plate 13d is a lattice-like frame body. Needless to say, neither the upper nor lower plates are provided with glass plates. This structure is suitable for holding a slide file as shown in FIG. 9. This file contains linear body 13f
A groove 17 is provided in the partition frame for fitting and positioning.

FIG. 7 shows a fourth embodiment of the present invention, in which the structure of the upper stage is different, and the receiver in the third embodiment shown in FIG. 6 is a transparent glass plate 13h, unlike the plate. be.

FIG. 10 shows a file projector called a so-called microscopic projector, which magnifies and projects a slide as a file under a microscope. The object is captured by the objective lens 19 by the light passing through the projection condenser lens 18, reflected by the reflecting mirror 20 above the objective lens 19, and projected onto the screen 22 provided in the screen box 21. The present invention can also be used in such a microprojector.

Of course, the use can also be expanded to include microscopes for direct observation that do not have a projection function.

(Effects of the Invention) Since the present invention is configured as described above, even if a file is curved or deformed for some reason, when it is placed on the upper stage, it can be kept in a stationary state parallel to the stage surface. Therefore, the objects held in the file are also parallel to the stage surface, and any object can be projected with the same focus, allowing smooth projection work.

Furthermore, since there is no transparent plate that refracts the incident light that passes through the object and enters the projection lens system, it is possible to obtain a good projected image.

Furthermore, it was possible to improve file protection, ease of attachment and detachment, and fixing stability when attaching and detaching files to and from the upper stage.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an overhead type file projector according to a first embodiment of the present invention, Fig. 2 is a partially omitted sectional view showing the inside of the main body, and Fig. 3 is a perspective view with the upper stage removed. , Figures 4A and B are side views and perspective views of the upper stage, Figure 5 is a perspective view of only the upper stage according to the second embodiment, and Figures 6A and B are the upper stage according to the third embodiment. A side view and a perspective view of the stage only; FIG. 7 is a perspective view of only the upper stage according to the fourth embodiment; FIG. 8 is a plan view of the slide file; FIG. 9 is a plan view of the preparation file; FIG. 10 is a partially cutaway side view of the microprojector. l... Projector body 2... Condenser lens for light projection 4... Reflector 5... Projection lens system 6.
・・Support arm 10・Guide rail 11・
・Lower stage 12 ・Guide 13 ・Upper stage 13a ・Suppressing plate 13b ・Success plate 14 ・Guide 15 ・Elongated hole Fig. 4 (a) (b) 3t

Claims (1)

[Scope of Claims] 1. A projector body having a light source and a condenser lens for projecting light and whose top opening is covered with a semi-transparent plate, and a support arm extending from one side of the projector body to above the condenser lens. The mirror and projection lens system held in the front and back direction (Y
The lower stage is movable in the left and right direction (X-axis direction) via guides provided in the front and back of the upper surface of the lower stage in a direction orthogonal to the guide rail, and the lower stage is movable in the left and right direction (X-axis direction). In a file projector comprising an upper stage consisting of an upper plate which can be moved and opened/closed on the lower plate via a guide tool formed with a long hole for sliding the holding plate continuous to the drop groove provided at both ends of the plate surface, A file projector characterized in that at least one of the holding plate and the receiving plate of the stage is a frame body that holds down a subject holder without interfering with the projection or projection of the subject. 2. The file projector according to claim 1, wherein both the holding plate and the receiving plate of the upper stage are made of a grid-like frame body. 3. Claim 1, characterized in that the holding plate of the upper stage is a lattice-like frame body, and the receiving plate is a transparent plate.
File projector as described in section. 4. The file projector according to claim 1, wherein the holding plate of the upper stage is composed of an outer frame and a linear body installed on the outer frame, and the receiving plate is a lattice-shaped frame body. .